Tipping is not a traditional Korean custom. Service charges are added to the bill but tipping is not expected. It is also not necessary to tip a taxi driver unless extra services are provided.

The standard electricity supply is 220-volts AC at 60Hz.

T-money is a transportation card as well as a device used to pay for taxi fares and, in some cases, transactions at convenience stores. T-money card is rechargeable at any of the T-money vendors or Ticket Vending and Card Reload Devices inside most subway stations.